更多"A Doppler speed log indicates speed"的相关试题:
[单项选择]A Doppler speed log indicates speed over ground（）.
A. at all times
B. in the bottom return mode
C. in the volume reverberation mode
D. only when there is no current
[单项选择]A Doppler speed log indicates speed through the water（）.
A. at all times
B. in the bottom return mode
C. in the volume reverberation mode
D. only when there is no current
[单项选择]A Doppler log in the bottom return mode indicates the（）.
A. velocity of the current
B. bottom characteristics
C. depth of the water
D. speed over the ground
[单项选择]Running an electric winch at slow speed over a long period of time causes（）.
A. the speed to be retarded by the friction brake
B. a load to go downward at full speed
C. the circuit breaker to turn off
D. the resistors to overheat and eventually burn out
[单项选择]Two men were（）a large log over the rough ground with the help of a rope.
A. pushing
B. drawing
C. dragging
D. carrying
[单项选择]Your ARPA has automatic speed inputs from the log．Due to currents，the log is indicating a faster speed than the speed over the ground.What should you expect under these circumstances（）.
A. The generated CPA will be less than the actual CPA
B. The generated TCPA will be later than the actual TCPA
C. The range of initial target acquisition will be less than normal
D. The targets true course vector will be in error
[单项选择]An over-speed trip serves to （）
A. stop the engine by cutting off the cooling water supply
B. stop the engine by closing the air intake
C. slow the engine but not stop it
D. slow the engine to half of normal load
[单项选择]The over-speed trip installed on most diesel engine will stop the engine by shutting off the （）
A. water supply
B. fuel oil supply
C. lube oil supply
D. exhaust damper
[单项选择]The over-speed trip device installed in some diesel engines is automatically actuated by（）
A. spring force
B. hydraulic pressure
C. centrifugal force
D. mechanical linkage
[单项选择]An over-speed trip stops a diesel engine when the engine （）
A. runs out of fuel
B. has low lubricating oil pressure
C. exceeds a set maximum speed
D. has high cooling water temperature
[单项选择]Propeller pitch speed minus ship speed divided by the propeller pitch speed is termed （）.
A. apparent slip
B. tree slip
C. pitch
D. propulsive efficiency
[单项选择]The majority of medium speed and high speed marine diesel engines for main or auxiliary drive operate on the （） cycle.
A. two-stroke
B. four-stoke
C. long-stroke
D. short-stroke
[单项选择]Safe speed is defined as that speed where（）.
A. you can stop within your visibility range
B. the vessel is not subject to vibrations
C. you are traveling slower than surrounding vessels
D. you can take proper and effective action to avoid collision
[单项选择]SAFE SPEED is defined as that speed where（）.
A. you can stop within your visibility range
B. you can take proper and effective action to avoid collision
C. you are traveling slower than surrounding vessels
D. no wake comes from your vessel
[单项选择]“safe speed” is defined as that speed where（）.
A. you can stop within your visibility range
B. you can take proper and effective action to avoid collision
C. you are traveling slower than surrounding vessels
D. no wake comes from your vessel
[单项选择]“Full speed ahead” and “Full speed astern” are（）given by the officers or the pilots.
A. sailing orders
B. speed orders
C. wheel orders
D. telegraph orders
